CVE-2016-1978

high

Published 2016-03-13 · Modified 2026-05-06

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CVSS v3

7.3

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.3

Description

Use-after-free vulnerability in the ssl3_HandleECDHServerKeyExchange function in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL (1) DHE or (2) ECDHE handshake at a time of high memory consumption.

Predictions

Exploit likelihood

82%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`2:3.21-1`
debian	bullseye	fixed	`2:3.21-1`
debian	forky	fixed	`2:3.21-1`
debian	sid	fixed	`2:3.21-1`
debian	trixie	fixed	`2:3.21-1`

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endIncluding":"43.0.4"}`
mozilla	network_security_services	`{"endIncluding":"3.20.1"}`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.